91a84c5b3c
This patch eliminates the type Address defined by the ruby memory system. This memory system would now use the type Addr that is in use by the rest of the system.
201 lines
8.3 KiB
Text
201 lines
8.3 KiB
Text
/*
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* Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* AMD's contributions to the MOESI hammer protocol do not constitute an
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* endorsement of its similarity to any AMD products.
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*/
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// CoherenceRequestType
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enumeration(CoherenceRequestType, desc="...") {
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GETX, desc="Get eXclusive";
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GETS, desc="Get Shared";
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MERGED_GETS, desc="Get Shared";
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PUT, desc="Put Ownership";
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WB_ACK, desc="Writeback ack";
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WB_NACK, desc="Writeback neg. ack";
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PUTF, desc="PUT on a Flush";
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GETF, desc="Issue exclusive for Flushing";
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BLOCK_ACK, desc="Dir Block ack";
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INV, desc="Invalidate";
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}
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// CoherenceResponseType
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enumeration(CoherenceResponseType, desc="...") {
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ACK, desc="ACKnowledgment, responder does not have a copy";
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ACK_SHARED, desc="ACKnowledgment, responder has a shared copy";
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DATA, desc="Data, responder does not have a copy";
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DATA_SHARED, desc="Data, responder has a shared copy";
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DATA_EXCLUSIVE, desc="Data, responder was exclusive, gave us a copy, and they went to invalid";
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WB_CLEAN, desc="Clean writeback";
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WB_DIRTY, desc="Dirty writeback";
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WB_EXCLUSIVE_CLEAN, desc="Clean writeback of exclusive data";
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WB_EXCLUSIVE_DIRTY, desc="Dirty writeback of exclusive data";
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UNBLOCK, desc="Unblock for writeback";
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UNBLOCKS, desc="Unblock now in S";
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UNBLOCKM, desc="Unblock now in M/O/E";
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NULL, desc="Null value";
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}
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// TriggerType
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enumeration(TriggerType, desc="...") {
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L2_to_L1, desc="L2 to L1 transfer";
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ALL_ACKS, desc="See corresponding event";
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ALL_ACKS_OWNER_EXISTS,desc="See corresponding event";
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ALL_ACKS_NO_SHARERS, desc="See corresponding event";
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ALL_UNBLOCKS, desc="all unblockS received";
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}
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// TriggerMsg
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structure(TriggerMsg, desc="...", interface="Message") {
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Addr addr, desc="Physical address for this request";
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TriggerType Type, desc="Type of trigger";
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bool functionalRead(Packet *pkt) {
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// Trigger messages do not hold any data!
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return false;
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}
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bool functionalWrite(Packet *pkt) {
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// Trigger messages do not hold any data!
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return false;
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}
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}
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// RequestMsg (and also forwarded requests)
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structure(RequestMsg, desc="...", interface="Message") {
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Addr addr, desc="Physical address for this request";
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CoherenceRequestType Type, desc="Type of request (GetS, GetX, PutX, etc)";
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MachineID Requestor, desc="Node who initiated the request";
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NetDest MergedRequestors, desc="Merge set of read requestors";
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NetDest Destination, desc="Multicast destination mask";
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MessageSizeType MessageSize, desc="size category of the message";
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bool DirectedProbe, default="false", desc="probe filter directed probe";
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Cycles InitialRequestTime, default="Cycles(0)",
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desc="time the initial requests was sent from the L1Cache";
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Cycles ForwardRequestTime, default="Cycles(0)",
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desc="time the dir forwarded the request";
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int SilentAcks, default="0", desc="silent acks from the full-bit directory";
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bool functionalRead(Packet *pkt) {
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// Request messages do not hold any data
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return false;
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}
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bool functionalWrite(Packet *pkt) {
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// Request messages do not hold any data
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return false;
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}
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}
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// ResponseMsg (and also unblock requests)
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structure(ResponseMsg, desc="...", interface="Message") {
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Addr addr, desc="Physical address for this request";
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CoherenceResponseType Type, desc="Type of response (Ack, Data, etc)";
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MachineID Sender, desc="Node who sent the data";
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MachineID CurOwner, desc="current owner of the block, used for UnblockS responses";
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NetDest Destination, desc="Node to whom the data is sent";
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DataBlock DataBlk, desc="data for the cache line";
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bool Dirty, desc="Is the data dirty (different than memory)?";
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int Acks, default="0", desc="How many messages this counts as";
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MessageSizeType MessageSize, desc="size category of the message";
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Cycles InitialRequestTime, default="Cycles(0)",
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desc="time the initial requests was sent from the L1Cache";
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Cycles ForwardRequestTime, default="Cycles(0)",
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desc="time the dir forwarded the request";
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int SilentAcks, default="0", desc="silent acks from the full-bit directory";
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bool functionalRead(Packet *pkt) {
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// The check below ensures that data is read only from messages that
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// actually hold data.
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if (Type == CoherenceResponseType:DATA ||
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Type == CoherenceResponseType:DATA_SHARED ||
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Type == CoherenceResponseType:DATA_EXCLUSIVE ||
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Type == CoherenceResponseType:WB_DIRTY ||
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Type == CoherenceResponseType:WB_EXCLUSIVE_DIRTY) {
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return testAndRead(addr, DataBlk, pkt);
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}
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return false;
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}
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bool functionalWrite(Packet *pkt) {
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// Message type does not matter since all messages are written.
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// If a protocol reads data from a packet that is not supposed
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// to hold the data, then the fault lies with the protocol.
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return testAndWrite(addr, DataBlk, pkt);
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}
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}
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enumeration(DMARequestType, desc="...", default="DMARequestType_NULL") {
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READ, desc="Memory Read";
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WRITE, desc="Memory Write";
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NULL, desc="Invalid";
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}
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enumeration(DMAResponseType, desc="...", default="DMAResponseType_NULL") {
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DATA, desc="DATA read";
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ACK, desc="ACK write";
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NULL, desc="Invalid";
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}
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structure(DMARequestMsg, desc="...", interface="Message") {
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DMARequestType Type, desc="Request type (read/write)";
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Addr PhysicalAddress, desc="Physical address for this request";
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Addr LineAddress, desc="Line address for this request";
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MachineID Requestor, desc="Node who initiated the request";
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NetDest Destination, desc="Destination";
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DataBlock DataBlk, desc="DataBlk attached to this request";
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int Len, desc="The length of the request";
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MessageSizeType MessageSize, desc="size category of the message";
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bool functionalRead(Packet *pkt) {
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return testAndRead(LineAddress, DataBlk, pkt);
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}
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bool functionalWrite(Packet *pkt) {
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return testAndWrite(LineAddress, DataBlk, pkt);
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}
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}
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structure(DMAResponseMsg, desc="...", interface="Message") {
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DMAResponseType Type, desc="Response type (DATA/ACK)";
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Addr PhysicalAddress, desc="Physical address for this request";
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Addr LineAddress, desc="Line address for this request";
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NetDest Destination, desc="Destination";
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DataBlock DataBlk, desc="DataBlk attached to this request";
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MessageSizeType MessageSize, desc="size category of the message";
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bool functionalRead(Packet *pkt) {
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return testAndRead(LineAddress, DataBlk, pkt);
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}
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bool functionalWrite(Packet *pkt) {
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return testAndWrite(LineAddress, DataBlk, pkt);
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}
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}
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